Dimplex Intermittent Power / Control Reset

Water heater randomly resets or turns off and on by itself

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Loose mains connections, Faulty internal power supply on PCB, Overheating of electronics, Voltage dips on supply

Safety: Turn off power before tightening terminals.

Tighten mains terminals: Ensure all incoming and internal power connections are secure.
Check for overheating: Look for blocked ventilation or dust buildup on heat sinks. Clean as needed.
Monitor supply: If possible, log supply voltage for dips or interruptions. Consult an electrician if supply issues are suspected.

Note: If resets continue, the main control PCB may need replacement.

Hard 4/5

Main Control PCB / Incoming Supply

Check Price on Amazon

We may earn a commission from links on this page.